咽いん喉こうを扼やくする

expression, suru verb (special)

gain control of a key position; command a strategic point

Rare idiomatic expression literally meaning 'to grasp the throat', used figuratively for seizing a critical strategic position or bottleneck. Found mainly in written or formal contexts.

• 敵てき軍ぐんは峡きょう谷こくの入いり口ぐちを占せん領りょうし、まさに咽いん喉こうを扼やくする形かたちとなった。

  The enemy forces occupied the entrance to the ravine, effectively commanding a key position.